Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 155 2012.12.10
Parameter
See Write Command
Response
MULTISLOT CLASS: <class>
OK
Read Command
AT+CGMSCLA
SS?
Parameter
See Write Command
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Write Command
AT+CGMSCLA
SS=<class>
Parameter
<class> GPRS multi-slot class
Reference Note
6.2.42 AT+CDEVICE View Current Flash Device Type
AT+CDEVICE View Current Flash Device Type
Read Command
AT+CDEVICE?
Response
Device Name: Current flash device type
OK
Reference
V.25ter
Note
6.2.43 AT+CCALR Call Ready Query
AT+CCALR Call Ready Query
Response
+CCALR: (list of supported <mode>s)
OK
Test Command
AT+CCALR=?
Parameter
<mode> A numeric parameter which indicates whether the module
is ready for phone call.
0 Module is not ready for phone call
1 Module is ready for phone call
Read Command
AT+CCALR?
Response
ME returns the status of result code presentation and an integer <n>